@mixin flex {
    display: flex;
    display: -moz-flex;
    display: -webkit-flex;
}

@mixin f-inline {
    display: inline-flex;
    display: -webkit-inline-flex;
}

@mixin f-warp {
    flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    -webkit-flex-wrap: wrap;
}

@mixin wrap-reverse {
    flex-wrap: wrap-reverse;
    -ms-flex-wrap: wrap-reverse;
    -webkit-flex-wrap: wrap-reverse;
}

@mixin items-center {
    align-items: center;
    -webkit-align-items: center;
}

@mixin items-start {
    align-items: flex-start;
    -webkit-align-items: flex-start;
}

@mixin items-end {
    align-items: flex-end;
    -webkit-align-items: flex-end;
}

@mixin justify-center {
    justify-content: center;
    -webkit-justify-content: center;
}

@mixin justify-start {
    justify-content: flex-start;
    -webkit-justify-content: flex-start;
}

@mixin justify-end {
    justify-content: flex-end;
    -webkit-justify-content: flex-end;
}

@mixin justify-between {
    justify-content: space-between;
    -webkit-justify-content: space-between;
}

@mixin justify-around {
    justify-content: space-around;
    -webkit-justify-content: space-around;
}

@mixin f-column {
    flex-direction: column;
    -ms-flex-direction: column;
    -webkit-flex-direction: column;
}

@mixin f-column-r {
    flex-direction: column-reverse;
    -ms-flex-direction: column-reverse;
    -webkit-flex-direction: column-reverse;
}